Date: Thu, 13 Feb 2003 03:25:12 +1100 From: Sam Izzo <izzo@humbug.net> To: freebsd-questions@freebsd.org Subject: memory leak problem Message-ID: <20030212162511.GA68413@kalgan.vic.optushome.com.au>
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Hi,
Woops, sorry about my other "asdf" spam email.. :-)
This might be a stupid/obvious question but dmalloc is reporting that I have
a memory leak in the following (test) program and I don't know why:
#include <stdio.h>
#include <stdlib.h>
#include <dmalloc.h>
int main(int argc, char **argv)
{
char *c = malloc(10);
strcpy(c, "hello");
printf("c=%s\n", c);
free(c);
return 1;
}
dmalloc is installed in my account and I compiled it with:
gcc -g test.c -o test /home/izzo/usr/lib/libdmalloc.a -I/home/izzo/usr/include
I set dmalloc up with:
dmalloc -i 200 -l dmlog high
and at the end of my log file (snipped for brevity) is:
1045066226: 3: total-size count in-use-size count source
1045066226: 3: 4096 1 4096 1 ra=0x280e57ec
1045066226: 3: 10 1 0 0 test.c:7
1045066226: 3: 4106 2 4096 1 Total of 2
1045066226: 3: dumping not-freed pointers changed since 0:
1045066226: 3: not freed: '0x808f008|s1' (4096 bytes) from 'ra=0x280e57ec'
1045066226: 3: total-size count source
1045066226: 3: 4096 1 ra=0x280e57ec
1045066226: 3: 4096 1 Total of 1
1045066226: 3: unknown memory: 1 pointer, 4096 bytes
Supposedly there is a 4096 byte memory leak. The same program on my Slackware
Linux box reports no leaks. I'm using 4.7-RELEASE. Does anyone have any ideas?
The same program on a friend's 4.5-RELEASE box reports a 1024 byte leak. Is
dmalloc just not FreeBSD-friendly?
Thanks
sam
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